CN101893515A - Method and device for matching engine and turbocharger - Google Patents

Method and device for matching engine and turbocharger Download PDF

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CN101893515A
CN101893515A CN2010102357335A CN201010235733A CN101893515A CN 101893515 A CN101893515 A CN 101893515A CN 2010102357335 A CN2010102357335 A CN 2010102357335A CN 201010235733 A CN201010235733 A CN 201010235733A CN 101893515 A CN101893515 A CN 101893515A
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CN101893515B (en
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陈润生
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Chery Automobile Co Ltd
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SAIC Chery Automobile Co Ltd
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Abstract

The invention discloses a method and a device for matching an engine and a turbocharger, belonging to the technical field of engines. The method comprises the following steps: acquiring the parameters of the engine from an interface; calling the matching function formula of the engine and the turbocharger from an Excel function library, according to the parameters of the engine, calculating out pressure ratio, air mass flow, flow related parameters of a turbo and expansion ratio of the turbo through the matching function formula; and calling the MAP graph of a charger and the MAP graph of the turbo from an Excel graph library, filling points decided by the pressure ratio and the air mass flow to the MAP graph of the charger, and filling the points decided by the flow related parameters of the turbo and the expansion ratio of the turbo to the MAP graph of the turbo. The device comprises an acquisition module, a computation module and a filling module. The invention can reduce the cost for matching the engine and the turbocharger.

Description

A kind of method and device that engine and turbosupercharger are mated
Technical field
The present invention relates to technical field of engines, particularly a kind of method and device that engine and turbosupercharger are mated.
Background technology
At automotive field, load the engine of turbosupercharger and used widely, wherein, turbosupercharger is installed on engine, the performance of engine is promoted significantly.Automobile vendor can be this engine apolegamy turbosupercharger for a engine, and then the turbosupercharger of apolegamy is installed on the engine.
Automobile vendor develops adapting software at present, increase depressor for a engine and a plurality of turbine, the correlation parameter of engine and the correlation parameter of each turbine increase device are input in the adapting software, carry out matching operation by this adapting software, obtain the matching result of engine and each turbosupercharger, select which kind of turbosupercharger by the technician for use according to matching result again.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Automobile vendor need spend a large amount of funds and remove to develop adapting software, has so increased the cost of coupling engine and turbosupercharger.
Summary of the invention
In order to reduce the cost of coupling engine and turbosupercharger, the invention provides a kind of method and device that engine and turbosupercharger are mated.Described technical scheme is as follows:
A kind of method that engine and turbosupercharger are mated, described method comprises:
From the effect interface, obtain engine parameter;
From the Excel function library, call the adaptation function formula of engine and turbosupercharger,, calculate pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by described adaptation function formula according to described engine parameter;
From the Excel picture library, call supercharger MAP (IGNITION CONTROL curve map) figure and turbine MAP figure, the point that described pressure ratio and described air mass flow determined is filled among the described supercharger MAP figure, and the point that described turbine flow parameter and described expansion ratio of turbine are determined is filled among the described turbine MAP figure.
Describedly obtain engine parameter the interface, comprising from effect:
From the Excel function library, call input-output function;
Utilize described input-output function, read engine parameter from described effect interface.
The described adaptation function formula that calls engine and turbosupercharger from the Excel function library according to described engine parameter, calculates pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by described adaptation function formula, comprising:
From described Excel function library, call the adaptation function formula of engine and supercharger,,, calculate described pressure ratio and described air mass flow by the adaptation function formula of described engine and supercharger according to described engine parameter;
From described Excel function library, call the adaptation function formula of engine and turbine,,, calculate described turbine flow parameter and described expansion ratio of turbine by the described adaptation function formula that starts with turbine according to described engine parameter.
Described before engine parameter is obtained in effect the interface, also comprise:
Choosing the Excel form from the Excel page, the title of described engine parameter is filled in the described Excel form of choosing, is that each engine parameter is selected the Excel form from the Excel page, and it is input window that the described Excel form of selecting is set.
Described sign in the point that described pressure ratio and described air mass flow determined among the described supercharger MAP figure after, also comprise:
In described supercharger MAP figure, read pneumatic plant adiabatic efficiency and pneumatic plant rotating speed from the point that described pressure ratio and described air mass flow determined.
A kind of device that engine and turbosupercharger are mated, described device comprises:
Acquisition module is used for obtaining engine parameter from the effect interface;
Computing module is used for calling from the Excel function library adaptation function formula of engine and turbosupercharger, according to described engine parameter, calculates pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by described adaptation function formula;
Packing module, be used for calling supercharger MAP figure and turbine MAP figure from the Excel picture library, the point that described pressure ratio and described air mass flow determined is filled among the described supercharger MAP figure, and the point that described turbine flow parameter and described expansion ratio of turbine are determined is filled among the described turbine MAP figure.
Described acquisition module comprises:
Call unit is used for calling input-output function from the Excel function library;
Reading unit is used to utilize described input-output function, reads engine parameter from described effect interface.
Described computing module comprises:
First computing unit is used for calling from described Excel function library the adaptation function formula of engine and supercharger, according to described engine parameter, by the adaptation function formula of described engine and supercharger, calculates described pressure ratio and described air mass flow;
Second computing unit is used for calling from described Excel function library the adaptation function formula of engine and turbine, according to described engine parameter, by the described adaptation function formula that starts with turbine, calculates described turbine flow parameter and described expansion ratio of turbine.
Described device also comprises:
Creation module, be used for choosing the Excel form from the Excel page, the title of described engine parameter is filled in the described Excel form of choosing, selects the Excel form for each engine parameter from the Excel page, it is input window that the described Excel form of selecting is set.
Described device also comprises:
Read module is used for reading pneumatic plant adiabatic efficiency and pneumatic plant rotating speed at described supercharger MAP figure from the point that described pressure ratio and described air mass flow determined.
By from the effect interface, obtaining engine parameter, from the Excel function library, call the adaptation function formula of engine and turbosupercharger, by described adaptation function formula engine parameter is calculated pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine, from the Excel picture library, call the MAP figure of supercharger and the MAP figure of turbine, the point that pressure ratio and air mass flow determined is signed among the MAP figure of supercharger, the point that turbine flow parameter and expansion ratio of turbine are determined is signed among the MAP figure of turbine.So coupling engine and turbosupercharger on the Excel platform have reduced a large amount of developments, thereby save the cost of coupling engine and turbosupercharger.
Description of drawings
Fig. 1 is a kind of method flow diagram that engine and turbosupercharger are mated that the embodiment of the invention 1 provides;
Fig. 2 is a kind of method flow diagram that engine and turbosupercharger are mated that the embodiment of the invention 2 provides;
Fig. 3 is a kind of effect interface synoptic diagram that the embodiment of the invention 2 provides;
Fig. 4 is a kind of device synoptic diagram that engine and turbosupercharger are mated that the embodiment of the invention 3 provides.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
As shown in Figure 1, the embodiment of the invention provides a kind of method that engine and turbosupercharger are mated, and comprising:
Step 101: obtain engine parameter from the effect interface, wherein, the effect interface is made up of the Excel form;
Step 102: from the Excel function library, call the adaptation function formula of engine and turbosupercharger,, calculate pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by the adaptation function formula according to the engine parameter that obtains;
Step 103: call supercharger MAP figure and turbine MAP and scheme from the Excel picture library, the point that pressure ratio and air mass flow determined is filled among the supercharger MAP figure, the point that turbine flow parameter and expansion ratio of turbine are determined is filled among the turbine MAP figure.
In embodiments of the present invention, from the effect interface, obtain engine parameter, from the Excel function library, call the adaptation function formula of engine and turbosupercharger, according to engine parameter and by the adaptation function formula, calculate pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine, from the Excel function library, call supercharger MAP figure and pneumatic plant MAP figure, pressure ratio and the described point of determining of air mass flow are input among the MAP figure of supercharger, and the point that turbine flow parameter and expansion ratio of turbine are determined is input among the turbine MAP figure.Wherein, the method that present embodiment provides has reduced a large amount of developments based on the Excel platform, thereby saves the cost of coupling engine and turbosupercharger.
Embodiment 2
As shown in Figure 2, the embodiment of the invention provides a kind of method that engine and turbosupercharger are mated, and comprising:
Step 201: draw and demonstration effect interface in the Excel page, wherein, the effect interface is made up of the Excel form;
Wherein, in the present embodiment, the user can import engine parameter in the effect interface, and engine parameter comprises fuel consumption, empty filter pressure drop, exhaust back pressure, charge air cooler pressure drop, pneumatic plant temperature in and MAT at least.In addition, engine parameter can also comprise temperature before rotating speed, moment of torsion, discharge capacity, air-fuel ratio, volumetric efficiency and the whirlpool.
Particularly, choosing the Excel form in the Excel page, in the Excel form of choosing, fill the title of engine parameter, is each engine parameter selected threshold Excel form in the Excel page, and the Excel form of selecting is arranged to input window.
Wherein, effect interface as shown in Figure 3, in the Excel of delegation of Excel page form, choose the Excel form, the title of in the Excel of each selection form, filling in engine parameter, and in the Excel form that the title one with each engine parameter is listed as, the input frame of nine Excel forms as this engine parameter is set.
Wherein, when effect interface display that will be is as shown in Figure 3 given the user, the user can act on the interface in the input window at this, inserts each engine parameter value.
Wherein, in the present embodiment,, with Excel form anabolic action interface, thereby reduced the extensive work at developmental function interface, thereby reduced cost of development directly at the Excel page.In addition, because the effect interface is made up of the Excel form, make that this effect interface is easier.
Step 202: function is imported out in the input in the calling excel function library, reads each the engine parameter value that acts on the interface by the input-output function that calls;
Wherein, Excel carries input-output function, and the direct input-output function of calling excel in the present embodiment reads each engine parameter in the input window at effect interface by the input-output function that calls.
Step 203: the adaptation function formula of engine in the calling excel function library and supercharger calculates pressure ratio and corrected flow according to the matching formula of engine parameter and supercharger;
Wherein, the developer is stored in the adaptation function formula of engine and supercharger in the Excel function library in advance, and the adaptation function formula of engine and supercharger is hidden in the Excel form.
Particularly, call the adaptation function formula of engine and supercharger from the Excel function library, the matching principle of contrast engine and pneumatic plant is according to engine parameter, by the adaptation function formula of engine and pneumatic plant, calculate the pressure ratio and the corrected flow of engine.
Wherein, the coupling of engine and supercharger is divided into the step of following (1)-(5), comprising:
(1):, calculate the needed air mass flow m_air of engine by following formula (1) according to the fuel consumption of engine capacity and engine;
m _ air = P e αg e η v 3600 × 10 3 L · · · · · · ( 1 )
Wherein, P eAnd g eAll be engine parameter, P eBe engine capacity, g eFuel consumption for engine; α, η vWith L all be constant, α is an excess air coefficient, η vBe coefficient of scavenging, the varying in size of the pairing L value of dissimilar engines, for gasoline engine, the L value is 14.6.
(2):, calculate pressure P in the compressor air inlet machine manifold by following formula (2) according to the temperature of charging efficiency, effective specific fuel consumption and the inlet manifold of engine k
P k = αP me g T k 877.2 λ · · · · · · ( 2 )
Wherein, P MeBe constant, P MeBe the mean effective pressure of the air of engine, λ and T kAll be engine parameter, λ is the charging efficiency or the volumetric efficiency of engine, T kMAT for engine.
(3): according to the pressure P in the compressor air inlet machine manifold kFlow through charge air cooler pressure drop Δ P with air, and calculate compressor delivery pressure P by following formula (3) 2
P 2＝P k+ΔP......(3)
Wherein, charge air cooler pressure drop Δ P is the engine parameter of user's input.
(4): calculate compressor inlet gaseous tension P by following formula (4) 1
P 1＝P 0-ΔP_intake……(4)
Wherein, Δ P_intake is that air passes through empty filter pressure drop loss, and this is a constant; P 0Atmospheric pressure also is a constant.
(5):, calculate the supercharger pressure ratio according to supercharger outlet gaseous tension P2 and intake pressure P1 Πc = ( P 2 P 1 ) .
Step 204: from the Excel picture library, call the MAP figure of supercharger, the point that pressure ratio and air mass flow determined that calculates is input among the MAP figure, and in MAP figure, read adiabatic the effectiveness and the pneumatic plant rotating speed of pneumatic plant at this some place;
Wherein, producer is in design during supercharger, is the MAP figure of the supercharger of supercharger exploitation of design, and the developer is the MAP figure of several superchargers of storage in the Excel picture library in advance, and the MAP figure of supercharger is hidden in the Excel table in the lattice.From the Excel picture library, call the MAP figure of every width of cloth supercharger respectively, the point that pressure ratio and air mass flow determined is signed among the MAP figure of every width of cloth supercharger.
Step 205: from the function library of Excel, call the adaptation function formula of engine and turbine, calculate the turbine flow parameter according to the adaptation function formula of engine and turbine
Figure BSA00000204914700071
And expansion ratio of turbine;
Wherein, the developer is stored in the adaptation function formula of engine and turbine in the function library of Excel in advance, and the adaptation function formula of engine and turbine is hidden in the Excel form.
Particularly, two steps calculated the turbine flow parameter by following step (a) with (b)
Figure BSA00000204914700072
And expansion ratio of turbine, comprising:
(a): calculate the exhaust gas flow m-eg that flows to turbine by following formula (5), and further calculate the turbine flow parameter and be
Figure BSA00000204914700073
m E = m _ air + m _ fuel m _ fuel = m _ air / a / 14.6 = p e * g e m _ eg = m E - Δm · · · · · · ( 5 )
Wherein, m EFor the waste gas total flow comprises the flow of the turbine of flowing through, m_eg is the flow of turbo blade of flowing through, and Δ m is the flow by exhaust gas by-pass valve.
Wherein, the value of Δ m is undertaken by experience usually that budget obtains, and in general, the diesel engine torque point requires venting about 20 percent, and rated point is not exitted; For the gasoline engine passenger car, torque point requires venting 1 18 left and right sides rated point to exit about percent 45.
(b): calculate the die swell ratio of turbine by following formula (6),
P c = m _ air × C P 1 × T 1 1 η T × [ ( P 2 P 1 ) K - 1 K - 1 ] PT = m _ eg × C P 3 × η T × T 3 × [ 1 - ( P 4 P 3 ) K T - 1 K T ] P c = PT · · · · · · ( 6 )
Wherein, C P1And C P3Be respectively the specific heat of combustion of air and waste gas, C P1=1, C P3=1.24, K T=1.3, K=1.4, P 4Be exhaust back pressure, its value is relevant with the car load exhaust system, and gasoline engine generally requires rated point P 4=55 ± 5KPa; η TProduct for the mechanical efficiency of the adiabatic efficiency of turbine and supercharger.
Step 206: call the MAP figure of turbine from the Excel picture library, the point that the turbine flow parameter that calculates and expansion ratio of turbine are determined is input among the MAP figure;
Wherein, producer during turbine, is MAP figure of turbine exploitation of design in design, and the developer is the MAP figure of several turbines of storage in the Excel picture library in advance, and the MAP figure of turbine is hidden in the Excel form.
Step 207: show the MAP figure of supercharger and the MAP figure of turbine.
Wherein, the technician can be according to the MAP figure of supercharger, and for starting to select a supercharger, the MAP figure according to turbine for engine is selected a turbine, so matches turbosupercharger for this engine.
In embodiments of the present invention, from the effect interface, obtain engine parameter, from the Excel function library, call the adaptation function formula of engine and turbosupercharger, according to engine parameter and by the adaptation function formula, calculate pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine, from the Excel function library, call supercharger MAP figure and pneumatic plant MAP figure, pressure ratio and the described point of determining of air mass flow are input among the MAP figure of supercharger, and the point that turbine flow parameter and expansion ratio of turbine are determined is input among the turbine MAP figure.Wherein, the method that present embodiment provides has reduced a large amount of developments based on the Excel platform, thereby saves the cost of coupling engine and turbosupercharger.
Embodiment 3
As shown in Figure 4, the embodiment of the invention provides a kind of device that engine and turbosupercharger are mated, and comprising:
Acquisition module 301 is used for obtaining engine parameter from the effect interface;
Computing module 302 is used for calling from the Excel function library adaptation function formula of engine and turbosupercharger, according to the engine parameter that obtains, calculates pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by the adaptation function formula that calls;
Packing module 303, be used for calling supercharger MAP figure and turbine MAP figure from the Excel picture library, the point that pressure ratio and air mass flow determined is filled among the supercharger MAP figure that calls, and the point that turbine flow parameter and expansion ratio of turbine are determined is filled among the turbine MAP figure that calls.
Wherein, acquisition module 301 comprises:
Call unit is used for calling input-output function from the Excel function library;
Reading unit is used for the input-output function by calling, and reads engine parameter from the input window at effect interface;
Wherein, computing module 302 comprises:
First computing unit is used for calling from the Excel function library adaptation function formula of engine and supercharger, according to the engine parameter that obtains, by the engine that calls and the adaptation function formula of supercharger, calculates pressure ratio and air mass flow;
Second computing unit is used for calling from the Excel function library adaptation function formula of engine and turbine, according to the engine parameter that obtains, by starting of the calling adaptation function formula with turbine, calculates turbine flow parameter and expansion ratio of turbine;
Further, this device also comprises:
Creation module, be used for choosing the Excel form from the Excel page, the title of described engine parameter is filled in the described Excel form of choosing, selects the Excel form for each engine parameter from the Excel page, it is input window that the described Excel form of selecting is set.
Further, this device also comprises:
Read module is used for reading pneumatic plant adiabatic efficiency and pneumatic plant rotating speed at described supercharger MAP figure from the point that pressure ratio and air mass flow determined.
In embodiments of the present invention, from the effect interface, obtain engine parameter, from the Excel function library, call the adaptation function formula of engine and turbosupercharger, according to engine parameter and by the adaptation function formula, calculate pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine, from the Excel function library, call supercharger MAP figure and pneumatic plant MAP figure, pressure ratio and the described point of determining of air mass flow are input among the MAP figure of supercharger, and the point that turbine flow parameter and expansion ratio of turbine are determined is input among the turbine MAP figure.Wherein, the method that present embodiment provides has reduced a large amount of developments based on the Excel platform, thereby saves the cost of coupling engine and turbosupercharger.
All or part of content in the technical scheme that above embodiment provides can realize that its software program is stored in the storage medium that can read by software programming, storage medium for example: the hard disk in the computing machine, CD or floppy disk.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. method that engine and turbosupercharger are mated is characterized in that described method comprises:
From the effect interface, obtain engine parameter;
From the Excel function library, call the adaptation function formula of engine and turbosupercharger,, calculate pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by described adaptation function formula according to described engine parameter;
From the Excel picture library, call supercharger MAP figure and turbine MAP figure, the point that described pressure ratio and described air mass flow determined is filled among the described supercharger MAP figure, and the point that described turbine flow parameter and described expansion ratio of turbine are determined is filled among the described turbine MAP figure.
2. the method for claim 1 is characterized in that, describedly obtains engine parameter from effect the interface, comprising:
From the Excel function library, call input-output function;
By described input-output function, from the input window at described effect interface, read engine parameter.
3. the method for claim 1, it is characterized in that, the described adaptation function formula that from the Excel function library, calls engine and turbosupercharger, according to described engine parameter, calculate pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by described adaptation function formula, comprising:
From described Excel function library, call the adaptation function formula of engine and supercharger,,, calculate described pressure ratio and described air mass flow by the adaptation function formula of described engine and supercharger according to described engine parameter;
From described Excel function library, call the adaptation function formula of engine and turbine,,, calculate described turbine flow parameter and described expansion ratio of turbine by the described adaptation function formula that starts with turbine according to described engine parameter.
4. as any described method of claim of claim 1-3, it is characterized in that, described before engine parameter is obtained in effect the interface, also comprise:
Choosing the Excel form from the Excel page, the title of described engine parameter is filled in the described Excel form of choosing, is that each engine parameter is selected the Excel form from the Excel page, and it is input window that the described Excel form of selecting is set.
5. as any described method of claim of claim 1-3, it is characterized in that, described sign in the point that described pressure ratio and described air mass flow determined among the described supercharger MAP figure after, also comprise:
In described supercharger MAP figure, read pneumatic plant adiabatic efficiency and pneumatic plant rotating speed from the point that described pressure ratio and described air mass flow determined.
6. device that engine and turbosupercharger are mated is characterized in that described device comprises:
Acquisition module is used for obtaining engine parameter from the effect interface;
Computing module is used for calling from the Excel function library adaptation function formula of engine and turbosupercharger, according to described engine parameter, calculates pressure ratio, air mass flow, turbine flow parameter and expansion ratio of turbine by described adaptation function formula;
Packing module, be used for calling supercharger MAP figure and turbine MAP figure from the Excel picture library, the point that described pressure ratio and described air mass flow determined is filled among the described supercharger MAP figure, and the point that described turbine flow parameter and described expansion ratio of turbine are determined is filled among the described turbine MAP figure.
7. device as claimed in claim 6 is characterized in that, described acquisition module comprises:
Call unit is used for calling input-output function from the Excel function library;
Reading unit is used for reading engine parameter by described input-output function from the input window at described effect interface.
8. device as claimed in claim 6 is characterized in that, described computing module comprises:
First computing unit is used for calling from described Excel function library the adaptation function formula of engine and supercharger, according to described engine parameter, by the adaptation function formula of described engine and supercharger, calculates described pressure ratio and described air mass flow;
Second computing unit is used for calling from described Excel function library the adaptation function formula of engine and turbine, according to described engine parameter, by the described adaptation function formula that starts with turbine, calculates described turbine flow parameter and described expansion ratio of turbine.
9. as any described device of claim of claim 6-8, it is characterized in that described device also comprises:
Creation module, be used for choosing the Excel form from the Excel page, the title of described engine parameter is filled in the described Excel form of choosing, selects the Excel form for each engine parameter from the Excel page, it is input window that the described Excel form of selecting is set.
10. as any described device of claim of claim 6-8, it is characterized in that described device also comprises:
Read module is used for reading pneumatic plant adiabatic efficiency and pneumatic plant rotating speed at described supercharger MAP figure from the point that described pressure ratio and described air mass flow determined.
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WO2012010050A1 (en) * 2010-07-21 2012-01-26 奇瑞汽车股份有限公司 Method and device for matching an engine with a turbocharger
CN102635451A (en) * 2012-04-26 2012-08-15 潍柴动力股份有限公司 Control method of protecting turbosuperchager
CN103207083A (en) * 2012-12-30 2013-07-17 潍柴动力股份有限公司 Turbine efficiency analyzing method and device
CN103742255A (en) * 2013-11-11 2014-04-23 中国北车集团大连机车车辆有限公司 Rotation speed output signal matching device for superchargers of locomotive diesel engine
CN104408248A (en) * 2014-11-26 2015-03-11 宁波威孚天力增压技术有限公司 Automatic matching method of engine and booster based on MATLAB
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CN106055792A (en) * 2016-05-31 2016-10-26 哈尔滨工程大学 Dynamic simulation method for matching of supercritical carbon dioxide gas compressor and turbine
CN106777553A (en) * 2016-11-29 2017-05-31 凤城市合鑫机械制造有限公司 A kind of turbocharger matching selection method based on vehicle performance
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